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Ochoco

Past Producer in Crook county in Oregon, United States with commodities Gold, Lead, Silver, Mercury, Antimony, Copper, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10103835
MRDS ID M055981
Record type Site
Current site name Ochoco
Alternate or previous names Ophir-Mayflower
Related records 10128810

Geographic coordinates

Geographic coordinates: -120.37277, 44.41705 (WGS84)
Relative position 28 MI. NE OF PRINEVILLE

Site location context

Political divisions (FIPS codes)

Crook(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ochoco Butte(quadrangle 1:24,000 scale)

Prineville(quadrangle 1:100,000 scale)

Bend(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Crooked(hydrologic unit)

Deschutes(hydrologic accounting unit)

Middle Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Ochoco National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Oregon Crook

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 013S 020E 30 Oregon

Commodities

Commodity Importance
Gold Primary
Lead Primary
Silver Primary
Mercury Tertiary
Antimony Critical Tertiary
Copper Tertiary
Zinc Critical Tertiary

Comments on the commodity information

  • PROSPECTED AS A GOLD DEPOSIT

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Tetrahedrite Ore
Calcite Gangue
Chlorite Gangue
Dolomite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Clarno Formation
    Rock description Clarno Formation
    Stratigraphic age (youngest) Oligocene

Nearby scientific data

(1) -120.37277, 44.41705
ListMap

Economic information

Ore body information

  • General form LENTICULAR MASSES

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Howard

Land status

Ownership category National Forest
Area name Ochoco National Forest

Production statistics

  • Year 1923
    Period 1903-1923
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^1.11 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Gold Gold 31g/mt
  • Year 1923
    Period 1903-1923
    Material AG
    Description Cp_Grade: ^ 0.06 % Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Lead Lead 0wt-pct
  • Year 1923
    Period 1903-1923
    Material AU
    Description Cp_Grade: ^ 0.15 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 4g/mt

Workings at the site

  • Type of workings Underground
    Length 449.58M

Reference information

Bibliographic references

  • Deposit

    BROOKS, H. C., 1963, QUICKSILVER IN OREGON: OREGON DEPT. OF GEOLOGY AND MINERAL INDUSTRIES, BULL. 55, 223 P.

  • Deposit

    MERCURY IN OREGON, 1965, USBM IC 8252

  • Deposit

    FREDERICK, F., 1945, STATE OF OREGON MAP SHOWING LOCATION OF QUICKSILVER DEPOSITS: OREGON DEPT. OF GEOL. AND MIN. INDUSTRIES, SCALE 1:1,000,000

  • Deposit

    BROOKS, H.C. AND RAMP, L., 1968, GOLD AND SILVER IN OREGON, ODGMI BULL. 61, P.160

  • Deposit

    5) GILLULY, J., REED, J.C., AND PARK, C.F., 1933, SOME MINING DISTRICTS OF EASTERN OREGON, USGS BULL. 846-

  • Production

    GILLULY AND OTHERS, 1933

General comments

Subject category Comment text
Deposit THE MINERALIZED GROUND CONSISTS OF INTENSELY ALTERED ANDESITE CUT BY NARROW VEINLETS. HIGH GRADE ORE SHOOTS ARE LOCATED AT VEINLET INTERSECTIONS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1976 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-AUG-1980 Ferns, Mark L. (Brooks, Howard C.) U.S. Geological Survey
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site